540 PROCEEDINGS OF THE AMERICAN ACADEMY 



Erigeron (Celmisia) Andkrsonii: lana fenni arachnoidea mox 

 decidua glabratum ; caulibus e rhizomate nudo adsurgente erectis sim- 

 plicissimis apice nudo monocephalis ; foliis coriaceis linearibus acutis, 

 radicalibus elongatis (spithama^is) 3 - 5-nerviis deorsum attenuatis, 

 caulinis brevibus basi latioribus in bracteas subulatas decrescentibus ; 

 capitulo hemisphairico majusculo (§-pollicari) ; involucri lanulosi squa- 

 mis lineari-lanceolatis subherbaceis parum biseriatis ; ligulis uniseriatis 

 exsertis lato-linearibus (ca^ruleis vel purpureis) ; stjli ramis fl. herm. 

 filiform ibus, parte hispida quam stigmatosa 3-4-plo longiori ; ache- 

 niis oblongo-linearibus villosis 4- 6-costatis ; pappo uniseriali, setis 

 aequalibus barbellulatis. — Nevada, near Carson City, Dr. C. L. An- 

 derson. Lake Tenaya in the Sierra Nevada, Prof. Brewer, a single 

 depauperate fpecimen. Stems a span to a foot high : the rigid leaves 

 soon glabrous. Bristles of the pappus all alike, but with a few minute 

 setulae intermixed, as in most Erigerons. This is a North American 

 representative of the Andine group of species, sometimes referred to 

 Aster, which Schultz has recognized as identical with Celmisia, and 

 Weddell has referred to Erigeron. I am constrained by the uniserial 

 pappus, etc., to adopt the same view, ratlier than to refer this plant to 

 Aster. But the long and filiform appendages of the style (resembling 

 those of some of its South American relatives) are most unlike those of 

 the true Erigerons. The several species of Celmisia differ greatly in 

 the form of the style. 



Erigeron concinnum, Torr. & Gray, var. aphanactis, ligulis 

 abortivis stylo brevioribus eradiatum. — Near Carson City, Nevada, 

 Dr. C. L. Anderson. Virginia City, H. G. Bloomer. 



Erigeron Bloomeri ; nanum, multiceps e radice fusiformi ; foliis 

 plerisque radicalibus confertis fere filiformibus cum scapis monocephalis 

 pube minuta appressa cinereis ; involucro lanato-villoso, squamis sub- 

 sequalibus disco parum brevioribus ; ligulis plane nuUis ; acheniis plano- 

 compressis hirsutulis ; pappo simplicissimo. — Nevada, near Virginia 

 City, H. G. Bloomer ; near Carson City, Dr. C. L. Anderson. Scapes 

 about three inches high, twice the length of the leaves, naked above, 

 2 - 3-leaved towards the base. Heads about twice the size of those 

 of E. filifoUum, the involucre clothed with copious white and soft 

 hairs. Pappus a little shorter tlian tlie tubular coroHas. Achenia flat, 

 with a nerve only on each margin. Appendages of the style short and 

 acute. 



